/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Sampling/MeshMapBakerQueue.h
Retrieve the next item in the queue to process. The current index is only advanced if the item is valid or.
A void* to the data to be processed, nullptr if the data for the next item in the queue is not available yet.
template<bool bFlush> void * Process()